ROLE OF PBO IN COVULCANIZATION OF CARBOXYLATED NITRILE POLYACRYLIC RUBBER BLEND IN THE PRESENCE OF ETHYLENE THIOUREA OR MERCAPTOBENZOTHIAZOLE

被引：6
作者：
CHOWDHURY, P
CHAKRAVORTI, MC
DAS, CK
机构：
[1] INDIAN INST TECHNOL,CTR MAT SCI,KHARAGPUR 721302,W BENGAL,INDIA
[2] INDIAN INST TECHNOL,DEPT CHEM,KHARAGPUR 721302,W BENGAL,INDIA
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 1995年 / 55卷 / 06期
关键词：
D O I：
10.1002/app.1995.070550601
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The effects of metal oxide (PbO) on covulcanization of the blend [carboxylated nitrile rubber (XNBR)-Polyacrylic rubber (ACM) = 50 : 50] in the presence of 2-mercaptobenzothiazole (MBT) or ethylene thiourea (ETU) have been evaluated to elucidate the curing mechanism. The optimum mole ratio of ETU-PbO and MBT-PbO with respect to cure characteristics and physical properties have been found to be 1 : 1.5 and 1 : 0.5, respectively. The examination of infrared (IR) spectra reveals that crosslinking occurs at the C-Cl cure site of the ACM and COOH cure site of the XNBR. Based on the optimum mole ratios and spectral analysis a scheme of reactions has been proposed. (C) 1995 John Wiley & Sons, Inc.
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页码：841 / 849
页数：9
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